#include <acknex.h>
#include <default.c>

BMAP *targetBmap = "#256x256x32";

ENTITY *blob, *earth, *writeTarget;

function skinChangeEvent() {
	if (me == render_view.genius)
		return 0;
	else
		return 1;
}

MATERIAL *skinChangeMat = {
	effect = "
		texture entSkin1;
		sampler SkinSampler = sampler_state { Texture = <entSkin1>; };
		
		float4x4 matWorld;
		float4x4 matWorldViewProj;
		float4 vecSunDir;
		
		void VS(in float3 inNormal: NORMAL,
				in float2 inTex: TEXCOORD0,
				out float4 outPos: POSITION,
				out float2 outTex: TEXCOORD0,
				out float3 outNormal: TEXCOORD1) {
			outPos = float4(inTex.x * 2.0 - 1.0, -inTex.y * 2.0 + 1.0, 1.0, 1.0);
			outTex = inTex;
			outNormal = mul(inNormal, (float3x3)matWorld);
		}
		
		float4 PS(in float2 inTex: TEXCOORD0,
				in float3 inNormal: TEXCOORD1): COLOR0 {
			float4 colour = tex2D(SkinSampler, inTex);
			colour.rgb *= saturate(dot(-vecSunDir, normalize(inNormal)));
			return colour;
		}
		
		technique t {
			pass p {
				CullMode = None;
				VertexShader = compile vs_2_0 VS();
				PixelShader = compile ps_2_0 PS();
			}
		}
	";
	flags = ENABLE_RENDER;
	event = skinChangeEvent;
}

function updateView() {
	beep();
	VIEW *v = view_create(1);
	v.bmap = targetBmap;
	v.size_x = v.size_y = 256;
	vec_set(v.x, camera.x);
	vec_set(v.pan, camera.pan);
	v.flags |= SHOW;
	v.genius = writeTarget;
	v.material = skinChangeMat;
	wait(1);
	ptr_remove(v);
}

function switchTarget() {
	beep();
	if (writeTarget == blob)
		writeTarget = earth;
	else
		writeTarget = blob;
}

function main() {
	level_load(NULL);
	writeTarget = blob = ent_create("blob.MDL", vector(0, -20, 0), NULL);
	earth = ent_create("earth.MDL", vector(0, 20, 0), NULL);
	camera.x -= 100;
	on_space = updateView;
	on_enter = switchTarget;
	while (1) {
		DEBUG_BMAP(targetBmap, 0, 1);
		wait(1);
	}
}